#define _USE_MATH_DEFINES
#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<string>
#include<iostream>
#include<cctype>
#include<cstdio>
#include<vector>
#include<stack>
#include<queue>
#include <algorithm>
#include<math.h>
#include<set>
#include<map>
#include <sstream>
#include<iomanip>

//#include<bits/stdc++.h>


using namespace std;

bool f[2000005];
int a[2000005];
int main() {

	for(int i=3;i<=2000000;i+=2)
		for (int j = 3; j*j <= i; j += 2) {
			if (i%j == 0) {
				f[i] = 1; break;
			}
		}
	//f[2] = 1;

	int n, m;
	cin >> n >> m;
	int s = 0;
	for (int i = 2; i <= n; i++) {
		if (i % 2 == 0 && i != 2)continue;
		if (!f[i]) {
			for (int j = i; j <= 2000000; j += i) {
				a[j]++;
			}
		}
	}
	for (int i = 2; i <= n; i++) {
		if (a[i] >= m) {
			s++; //cout << i << endl;
		}
	}
	cout << s << endl;
	return 0;
}